What rules and tables did you configure in iptables to manage network traffic?

In iptables, there are several tables, each responsible for a specific type of packet processing:

• filter — the main table for traffic filtering (INPUT, OUTPUT, FORWARD).
• nat — for address translation (PREROUTING, POSTROUTING, OUTPUT).
• mangle — for modifying packets (e.g., changing TOS).
• raw — for excluding packets from connection tracking.

Rules are usually configured in chains within these tables. For example, to block incoming traffic on a specific port:

iptables -A INPUT -p tcp --dport 22 -j DROP

Or to allow traffic only from a specific IP:

iptables -A INPUT -s 192.168.1.100 -j ACCEPT

Rules for NAT, such as port forwarding, are also commonly set up:

iptables -t nat -A PREROUTING -p tcp --dport 8080 -j DNAT --to-destination 192.168.1.10:80

Overall, I have configured rules for filtering incoming and outgoing traffic, port forwarding, IP access restrictions, and logging suspicious packets.